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When a high-speed passenger train traveling atvP = 55 m/s rounds a bend, the engineer is shocked to see that a locomotive has improperly enteredonto the track from a siding and is a distance D =1000 m ahead (see figure). The locomotive is moving atvL = 9 m/s. The engineer of the passenger train immediately applies the brakes. Assume that anx axis extends in the direction of motion. What must be the constant acceleration along that axis if a collision is to bejust avoided?
An earth satellite moves in a circular orbit with an orbital speed of 6000m/s. Find the time of one revolution of the satellite
A string that is under 47.0N of tension has linear density 5.80g/m. What is the maximum velocity of a particle on the string
On the moon the surface temperature ranges from 376 K during the day to 0.98 102 K at night. What are these temperatures on the Celsius scale
750kg racecar took 3s to slow from 32m/s to 15m/s. What was the impluse? what was the average force applied to the brakes
A Big Mac has 3,100,000 Joules of chemical energy, what is the cost of the electric energy equivalent to the energy in a Big Mac
An electron is placed at the origin of a coordinate system O, close to the surface of the Earth. A second electron is placed on the Y-axis at coordinate y so that the electrostatic force on the electron at the origin balances the gravitational force...
In 1939 or 1940, Emanuel Zacchini took his human-cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net, If he reached maximum height over the middle wheel, by how much did he clear it
A baggage cart full of luggage is coasting at a speed vA across the airport taxiway. When forty-one percent of the mass of the cart and luggage is thrown off the cart, Calculate the ratio vB/vA
A starship moving toward Earth with a speed of 0.71c launches a shuttle craft in the forward direction. What is the speed of the shuttle relative to the starship
A bicycle wheel (with very light spokes) of mass M and radius R is mounted on a light axel through its center. Write a statement of conservation of energy for this system
Use a computer to produce a table and graph, like those in this section, for two interacting two-state paramagnets, each containing 100 elementary magnetic dipoles.
The mass of a regulation tennis ball is 58.0 g (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 31.0 ms. what impulse did he exert on the ball
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